Effect of sulfate on the passive and crevice corrosion properties of alloy 22 in 4 M sodium chloride

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Abstract

The study of the electrochemical behavior of Alloy 22 (UNS N06022) was carried out in 4 M sodium chloride (NaCl) and 4 M NaCl with sulfate additions of 0.4 M and 0.04 M between 45°C and 105°C with multiple crevice assembly specimens. The passive and crevice corrosion properties of Alloy 22 were investigated in these electrolytes. The susceptibility to corrosion was found to decrease in the presence of sulfate in solution.

Original languageEnglish
Pages (from-to)340-356
Number of pages17
JournalCorrosion
Volume62
Issue number4
DOIs
StatePublished - May 2006
Externally publishedYes

Keywords

  • Alloy 22
  • Breakdown potential
  • Chloride
  • Corrosion potential
  • Crevice corrosion
  • Cyclic polarization
  • Inhibition
  • Passive corrosion rate
  • Repassivation potential
  • Sulfate
  • Temperature

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